1 <?php

     2 

     3 /**

     4  * @file

     5  * Default theme implementation to navigate books.

     6  *

     7  * Presented under nodes that are a part of book outlines.

     8  *

     9  * Available variables:

    10  * - $tree: The immediate children of the current node rendered as an unordered

    11  *   list.

    12  * - $current_depth: Depth of the current node within the book outline. Provided

    13  *   for context.

    14  * - $prev_url: URL to the previous node.

    15  * - $prev_title: Title of the previous node.

    16  * - $parent_url: URL to the parent node.

    17  * - $parent_title: Title of the parent node. Not printed by default. Provided

    18  *   as an option.

    19  * - $next_url: URL to the next node.

    20  * - $next_title: Title of the next node.

    21  * - $has_links: Flags TRUE whenever the previous, parent or next data has a

    22  *   value.

    23  * - $book_id: The book ID of the current outline being viewed. Same as the node

    24  *   ID containing the entire outline. Provided for context.

    25  * - $book_url: The book/node URL of the current outline being viewed. Provided

    26  *   as an option. Not used by default.

    27  * - $book_title: The book/node title of the current outline being viewed.

    28  *   Provided as an option. Not used by default.

    29  *

    30  * @see template_preprocess_book_navigation()

    31  *

    32  * @ingroup themeable

    33  */

    34 ?>

    35 <?php if ($tree || $has_links): ?>

    36   <div id="book-navigation-<?php print $book_id; ?>" class="book-navigation">

    37     <?php print $tree; ?>

    38 

    39     <?php if ($has_links): ?>

    40     <div class="page-links clearfix">

    41       <?php if ($prev_url): ?>

    42         <a href="<?php print $prev_url; ?>" class="page-previous" title="<?php print t('Go to previous page'); ?>"><?php print t('‹ ') . $prev_title; ?></a>

    43       <?php endif; ?>

    44       <?php if ($parent_url): ?>

    45         <a href="<?php print $parent_url; ?>" class="page-up" title="<?php print t('Go to parent page'); ?>"><?php print t('up'); ?></a>

    46       <?php endif; ?>

    47       <?php if ($next_url): ?>

    48         <a href="<?php print $next_url; ?>" class="page-next" title="<?php print t('Go to next page'); ?>"><?php print $next_title . t(' ›'); ?></a>

    49       <?php endif; ?>

    50     </div>

    51     <?php endif; ?>

    52 

    53   </div>

    54 <?php endif; ?>